Year,Value,Lake Superior,SST,Jul,(°C)
1940,8.227
1941,7.32
1942,9.82
1943,7.708
1944,10.22
1945,6.519
1946,8.144
1947,6.673
1948,5.83
1949,7.72
1950,7.512
1951,5.538
1952,10.643
1953,10.15
1954,10.583
1955,9.835
1956,5.013
1957,7.369
1958,6.07
1959,9.033
1960,10.305
1961,7.74
1962,5.949
1963,5.368
1964,7.414
1965,5.411
1966,7.725
1967,5.777
1968,5.358
1969,6.954
1970,7.798
1971,6.713
1972,5.567
1973,7.306
1974,6.87
1975,7.612
1976,7.065
1977,7.435
1978,7.221
1979,6.825
1980,9.116
1981,8.304
1982,5.971
1983,9.057
1984,6.569
1985,7.365
1986,7.582
1987,12.384
1988,10.013
1989,6.626
1990,6.903
1991,7.809
1992,6.805
1993,6.772
1994,7.132
1995,7.901
1996,5.456
1997,6.129
1998,13.153
1999,10.814
2000,10.389
2001,8.164
2002,9.821
2003,6.416
2004,8.557
2005,11.0
2006,12.865
2007,8.74
2008,15.232
2009,14.179
2010,18.756
2011,16.127
2012,21.432
2013,14.474
2014,5.621
2015,7.939
2016,11.853
2017,7.988
2018,7.046
2019,7.143
2020,10.147
2021,13.043
2022,5.554
2023,8.702
2024,12.759
2025,9.144